The Irish-trained nine-year-old was pulled by Robert Thornton before the 12th fence when behind in his first attempt at three miles.
He remained at Kempton overnight before returning to trainer Tom Cooper’s stables in Tralee.
“He’s not right – he was found to be clinically abnormal after his run yesterday,” said Cooper.
“He will be OK. We’ll give him a rest when he gets back home. I’ve no idea when he’ll run again. You could see he wasn’t going after half a mile.”
Paul Nicholls revealed yesterday that talented multiple Grade 2-winning chaser The Nightingale finished distressed after the King Georgeand is suffering from a fibrillating heart.
The eight-year-old, ridden by Sam Thomas was pulled up after the third-last.
Meanwhile, a big run in the Hennessy Gold Cup at Leopardstown next month could book a place in the Cheltenham Gold Cup for Pandorama.
Noel Meade’s eight-year-old has had four Grade One successes, three of them at the Dublin venue including the Lexus Chase at Christmas.
He will return on February 6, where he is one of 18 entries for the three-mile showpiece.
Meade said: “We’ll go for the Hennessy and see how that goes. “If that went well it (Gold Cup) is what everybody dreams of and we’d love to go for it.”